Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Protection at a particular protocol layer
Reexamination Certificate
2005-10-04
2005-10-04
Sheikh, Ayaz (Department: 2131)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Protection at a particular protocol layer
C713S001000, C713S002000, C713S189000, C713S193000, C713S152000, C713S300000, C714S022000, C714S721000, C710S108000, C710S108000, C710S108000, C710S010000, C709S218000
Reexamination Certificate
active
06952777
ABSTRACT:
A method for protecting a security module includes the steps of monitoring proper insertion of the module on a device motherboard with first, second and third function units, erasing sensitive data due to an improper use or a replacement of the module with the second function unit, inhibiting the functionality of the module with the third function unit during a replacement of the security module, re-initializing the previously erased, sensitive data following proper use or replacement of the security module, and re-commissioning by enabling the function units of the security module. An arrangement implementation of the method has an unplugged status detection unit that has a circuit for resettable self-holding of a status indicator, the self-holding being triggered when the voltage level on a test voltage line deviates from a predetermined potential. A processor connected to the other function units and is programmed to identify and modify the status of the security module.
REFERENCES:
patent: 4575621 (1986-03-01), Dreifus
patent: 4746234 (1988-05-01), Harry
patent: 4804957 (1989-02-01), Selph et al.
patent: 4805136 (1989-02-01), Morino et al.
patent: 4823323 (1989-04-01), Higuchi
patent: 4903232 (1990-02-01), O'Connell et al.
patent: 5039580 (1991-08-01), Mori et al.
patent: 5097253 (1992-03-01), Eschbach et al.
patent: 5309387 (1994-05-01), Mori
patent: 5353350 (1994-10-01), Unsworth et al.
patent: 5490077 (1996-02-01), Freytag
patent: 5515540 (1996-05-01), Grider et al.
patent: 5566323 (1996-10-01), Ugon
patent: 5606508 (1997-02-01), Thiel
patent: 5671146 (1997-09-01), Windel et al.
patent: 5680463 (1997-10-01), Windel et al.
patent: 5712916 (1998-01-01), Windel et al.
patent: 5734723 (1998-03-01), Windel et al.
patent: 5969504 (1999-10-01), Cutchis
patent: 6059191 (2000-05-01), Sedlak et al.
patent: 6088762 (2000-07-01), Creta
patent: 6105136 (2000-08-01), Cromer et al.
patent: 6185645 (2001-02-01), Klein et al.
patent: 6292898 (2001-09-01), Sutherland
patent: PS 43 33 156 (1995-08-01), None
patent: PS 196 05 015 (1997-03-01), None
patent: 0 417 447 (1990-07-01), None
patent: 0 891 601 (1997-03-01), None
patent: 2 303 173 (1997-02-01), None
patent: WO 98/20461 (1998-05-01), None
“Information Based Indicia Program Postal Security Device Specification”, United States Postal Service, Jun. 13, 1996.
Post Peter
Rosenau Dirk
Schlaaff Torsten
Chen Shin-Hon
Francotyp-Postalia AG & Co.
Schiff & Hardin LLP
Sheikh Ayaz
LandOfFree
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